system(3) behaviour under Esix rev. D

[Chip Salzenberg]

According to walter at mecky.UUCP (Walter Mecky):
>I can not speak for ESIX, but in my system (SCO UNIX) this is a
>(not documented) fact:
>
>	sh resets the effective uid back to the real 
>	uid if they are different and the EUID != 0.
>

SCO support has confirmed that /bin/sh doesn't like EUID and UID
differing, and attempts to "correct" the matter.  Double bleh.